Common variable immunodeficiency
Low IgG with low IgA and/or IgM and poor vaccine responses; single-gene forms include NFKB1, NFKB2, ICOS, CD19, CD81, CR2, IKZF1, IRF2BP2, SEC61A1 and TNFRSF13B (TACI).
What a diagnosis changes
Immunoglobulin replacement and early treatment of infections are standard; a genetic cause can guide monitoring for autoimmunity, lymphoma and lung disease, and some forms (such as LRBA deficiency) respond to targeted therapy.
Also known as
common variable hypogamma-globulinemia; Common Variable Immune Deficiency; common variable immune deficiency; hypogamma-globulinemia, acquired; Immunoglobulin deficiency, late-onset; primary antibody deficiency; primary hypogammaglobulinemia; secondary hypogammaglobulinemia
Includes 17 related subtypes ↓Hide subtypes ↑
- combined immunodeficiency due to LRBA deficiency
- deficiency in anterior pituitary function - variable immunodeficiency syndrome
- IL21-related infantile inflammatory bowel disease
- immune deficiency, familial variable
- immunodeficiency, common variable, 1
- immunodeficiency, common variable, 10
- immunodeficiency, common variable, 12
- immunodeficiency, common variable, 14
- immunodeficiency, common variable, 15
- immunodeficiency, common variable, 2
- immunodeficiency, common variable, 3
- immunodeficiency, common variable, 4
- immunodeficiency, common variable, 5
- immunodeficiency, common variable, 6
- immunodeficiency, common variable, 7
- immunodeficiency, common variable, due to APRIL deficiency
- pancytopenia due to IKZF1 mutations
